Filter

Abstract

The disclosure relates to a filter for filtering water, which contains nutrients, such as nitrate. The filter comprises a filter casing, and biomass comprising living brown algae individual(s) connected to said filter casing or closed inside said filter casing, wherein the filter casing allows water to flow through the filter while keeping the living brown algae individual(s) in the filter casing, or the filter casing acts as a substrate on which the brown algae individual(s) is/are growing and the water flow allows the water to be filtrated to be contacted with the living brown algae individual(s) growing on the filter casing. The disclosure also relates to a process for filtering water and to the use of the filter.

Dependencies are inferred from the claim text.